Equations
potential difference * current
what is the power equation
The current that flows around a complete circuit in one direction only?
What is direct current?
the state of matter that particles have the most energy
what is gas
The reason why light is refracted as it crosses from air into glass.
What happens when velocity/speed of the light decreases as it enters the glass?
mass / volume
What is the density equation?
A current that changes direction
What is alternating current?
The state of matter in which the particles mostly touching but arranged in a random way
What is liquid?
This happens to water waves when they pass into a deeper region
What is speeding up so waves (wavefronts) move further apart?
What is the energy transferred equation
The network of power stations, cables and transformers that allows electrical energy to be transferred to different areas.
What is the National Grid?
The theory that describes how particles are arranged in solids, liquids and gases and helps us to explain the properties of states of matter.
what is the kinetic theory?
The differences between longitudinal waves and transverse waves.
What is
in longitudinal waves, the particles oscillate parallel to the direction of energy transfer, causing areas of compression and rarefaction?
OR
In transverse waves, the particles oscillate perpendicular to the direction of energy transfer, causing peaks and troughs?
force * distance
what is the work done equation?
A fuse is connected in the ____________ wire.
What is the live wire?
The transition of a substance directly from the solid to the gas state, without passing through the liquid state.
what is sublimation
A typical value for the speed of sound
what is 3.3 × 102 m/s?
change in velocity ÷ time
what is the acceleration equation?
energy from a source that is not depleted when used
What is renewable energy?
A solid that will sublime at room temperature and pressure
What is solid carbon dioxide (dry ice)
One piece of evidence that shows when a sound wave travels through the air it is the wave and not the air itself that travels with drums
what happens when vibrating drum skin does not move the air away to create a vacuum around the drum?